Stress: Some Major Effects Stress stems from many different sources and important effects on persons who experience it. Stress and health: the silent killer - Stress plays some role in 50-70% of all physical illness included some of the most serious and life-threatening ailments known to medical science: heart disease‚ high blood pressure‚ hardening of the arteries( 動脈硬化)‚ ulcers(胃潰瘍)‚ and even diabetes. Immune system: the mechanism through which our bodies recognize and destroy potentially
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Eight Benefits To Smiling: Smiling Makes Us Attractive We are drawn to people who smile. There is an attraction factor. We want to know a smiling person and figure out what is so good. Frowns‚ scowls and grimaces all push people away -- but a smile draws them in (avoid these smile aging habits to keep your smile looking great). Smiling Changes Our Mood Next time you are feeling down‚ try putting on a smile. There’s a good chance you mood will change for the better. Smiling can trick the body
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Describe and evaluate research into stress and the immune system Acute stressors have been shown to have a negative affect on the immune system. The relationship between stress and immune system functioning has focused on acute stressors and has found a decrease in immune cell function. For example Kiecolt-Glaser (1984) conducted a natural experiment investigating whether short-term stressors had an affect on the immune system of medical students. Blood samples were taken from each student one
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Humor Do you know that humor can cause positive effects on our immune system? According to certain research‚ it actually activates our immune system‚ reduces our stress hormones and leads to muscle relaxation. Because of these effects‚ our immune system will be strengthen. As a result‚ humor lets our body feel so relaxed. Humor is a daily medicine that we should take because it keeps us young‚ happy and optimistic. According to Merriam Webster’s Collegiate Dictionary‚ humor means
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Diseases caused by Metazoan Parasites Metazoan parasites are multicellular‚ macro in size with complex organs‚ direct or indirect life cycle‚ and evolved to have specialized morpho-adaptation for parasitism. Metazoans include a diverse group of parasites‚ viz.‚ myxozoans‚ helminths (monogeneans‚ digeneans‚ cestodes‚ nematodes and acanthocephalans)‚ crustaceans (copepods and branchiurans) and hirudineans. Myxozoans Myxozoans are coelozoic and histozoic metazoan parasites with microscopic body
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Describe the four classes of chemical messengers. The human body contains chemical messengers. There are four groups of chemical messengers within the human body. Each chemical messenger are unique in their own way‚ having different functions throughout the body. The four groups are as follows in no specific order: Autocrine‚ paracrine‚ neurotransmitter‚ and endocrine. Neurotransmitter chemical messengers are let out by neurons where they are deposited into the synaptic cleft. Neurotransmitter
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Outline and evaluate research into the effects of stress on the immune system The immune system helps fight off attacks from ‘foreign invaders’‚ the immune system is a network of cells‚ tissues and organs that help fight off attacks from viruses‚ parasites and micro organisms that enter our bodies that can cause infections and other problems. The idea that all the cells in our bodies have codes ‘tattooed’ onto them that are unique to each of us help us understand what the immune system does clearer
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The human body has developed a great variety of mechanisms to protect itself from invasion by pathogenic microorganisms. These host defences include prevention of entry and dealing with the pathogens once they have breached the outer defences of the body. Once a pathogen is inside the body‚ the immune system must recognize the pathogen as foreign and dispose of it. The overall immune system is divided into two separate systems that do work together to protect the body. The Innate system‚ is the
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Jason Huang Antibody Variations AP Biology EO1 Explain how variations within a class of molecules allows for a greater diversity of functions. Focus on antibody variations. During an immune response‚ the white blood cells including T cells and B cells bind to the antigen. Antigens are chemicals released from invading pathogens or toxins. The binding of antigen to the antigen receptors of T cells or B cells help activate and secrete antibodies to bind to the antigen receptor protein on the
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agents to produce a modified biological substance. Examples of biotechnology drugs are monoclonal antibodies and recombinant DNA. Monoclonal antibodies are important reagents in the treatment and diagnosis of disease. They have been used for diagnosis of pregnancy‚ detection of presence and concentration of drugs in the blood‚ histocompatibility assay‚ and detecting shed tumor antigens. They are antibodies that are mass produced in a laboratory from a single clone that recognizes only one epitope of
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